Path: utzoo!attcan!uunet!cs.utexas.edu!usc!bloom-beacon!ATHENA.MIT.EDU!swick
From: swick@ATHENA.MIT.EDU (Ralph R. Swick)
Newsgroups: comp.windows.x
Subject: Re: Widget with more than one window
Message-ID: <8906291502.AA02074@LYRE.MIT.EDU>
Date: 29 Jun 89 15:02:38 GMT
References: <8906232004.AA05642@kentmath.kent.edu>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: DEC/MIT Project Athena
Lines: 22


     Date:  Fri, 23 Jun 89 16:04:13 EDT
     From:  doleh%kent.edu@relay.cs.net

     
     	I am trying to create a widget with more than one window.
     I create subwindows of the XtWindow(w). Everything was fine except
     when I used XtDispatch(event), where event->window is one of the subwindows
     the event is not seen by the widget. 

Xt only knows how to dispatch input from one window per widget.
If you want Xt to dispatch input from multiple windows then each of
them must be made into a widget.  You can still create a compound
or composite widget to transparently instantiate the subwidgets
for the application, keeping the internal implementation opaque.

Alternatively, if you're only interested in "user input" from the
sub-windows, you could add the event handler to the parent, and
not do SelectInput on the subwindows, thereby allowing the server
to propogate the events to a window known to Xt.  Once the handler
gets the event, you can use the child field of the event to
distinguish the particular subwindow.